4001001205 has 8 divisors (see below), whose sum is σ = 4956079104. Its totient is φ = 3097549200.

The previous prime is 4001001203. The next prime is 4001001223. The reversal of 4001001205 is 5021001004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4001001205 - 2¹ = 4001001203 is a prime.

It is a super-2 number, since 2×4001001205² = 32016021284822904050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001001203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12906301 + ... + 12906610.

It is an arithmetic number, because the mean of its divisors is an integer number (619509888).

Almost surely, 2^4001001205 is an apocalyptic number.

It is an amenable number.

4001001205 is a deficient number, since it is larger than the sum of its proper divisors (955077899).

4001001205 is a wasteful number, since it uses less digits than its factorization.

4001001205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25812947.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 4001001205 is about 63253.4679286440. The cubic root of 4001001205 is about 1587.5334837421.

Adding to 4001001205 its reverse (5021001004), we get a palindrome (9022002209).

The spelling of 4001001205 in words is "four billion, one million, one thousand, two hundred five".